Dr. Gregory Siwek, MD
- Medicare services, 2024
- 692
- Medicare patients, 2024
- 198
- Part D claims, 2024
- 689
- Hospital affiliations
- 2
- Industry payments
- $32
- Practice address
- 8170 33rd Avenue South, Bloomington, MN 55425
- Practice phone
- Call (952) 883-6877
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Health Partners Hospice & Palliative Care
Hospice - Home Health Agency-Owned · Bloomington, Minnesota
Find Dr. Siwek's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory Siwek is an infectious disease specialist in Minneapolis, Minnesota
Dr. Siwek practices at Health Partners Hospice & Palliative Care in Bloomington, Minnesota.
Dr. Siwek's NPI, 1437125317, was assigned on February 28, 2006. Dr. Siwek graduated from Rowan University School of Osteopathic Medicine in 1999. Dr. Siwek holds Minnesota license 43054.
- NPI
- 1437125317NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7214967389
- NPI enumeration date
- February 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (952) 883-6877
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Siwek practices at Health Partners Hospice & Palliative Care in Bloomington, Minnesota
Dr. Siwek's primary practice is Health Partners Hospice & Palliative Care, at 8170 33rd Avenue South, Bloomington, MN 55425 in Hennepin County. The practice phone is (952) 883-6877.
- Health Partners Hospice & Palliative Care8170 33rd Avenue South, Bloomington, MN 55425 · Hennepin CountyPhone(952) 883-6877
Source: Dmand AI Affiliation Data
Dr. Gregory Siwek is affiliated with 3 sites of care and 1 medical group
Dr. Siwek's primary practice is Health Partners Hospice & Palliative Care in Bloomington, Minnesota. Dr. Siwek is also affiliated with Regions Hospital. The medical group on file is HealthPartners. Dmand AI also links Dr. Siwek to 1 more hospital, named with a free account. Dr. Siwek's employer is on file too: a hospice.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory Siwek's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siwek practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Health Partners Hospice & Palliative Care | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Siwek is one of 177 infectious disease specialists in Minnesota
Infectious disease is Dr. Siwek's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Siwek is licensed in Minnesota.
Specialties and state licenses
- Infectious disease, MinnesotaPrimary
Infectious disease specialists near Dr. Siwek
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory Siwek billed Medicare for 692 services in 2024
CMS data shows 692 Medicare services from Dr. Siwek across 5 procedure codes in 2024, for 198 Medicare patients. Medicare paid $58,669 for them.
Dr. Siwek's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5792024: 6177%
- Lab and pathology
- 2023: 292024: 4038%
- Surgery
- 2023: 362024: 353%
Where Dr. Siwek's Medicare services took place, 2024
- In an office13820%
- In a facility55480%
Dr. Siwek compared with the Minnesota median for infectious disease specialists, 2024
- Dr. Siwek
- Minnesota median
- Medicare services
- 692vs 2003.5 times
- Medicare patients
- 198vs 11080% above
- Part D claims
- 558vs 1234.5 times
Medians across 169 infectious disease specialists in Minnesota with Dmand AI profiles that report each measure.
Dr. Siwek's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Siwek and other infectious disease specialists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Siwek treated 198 Medicare patients in 2024, average age 66
CMS counts 198 Medicare patients who saw Dr. Siwek in 2024. The largest group is under 65, with 78 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 44% are also on Medicaid. Their average risk score is 3.32, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Siwek's median patient age at 62, with 42% women.
Dr. Siwek's Medicare patients by age, 2024
Dr. Siwek's Medicare patients by sex, 2024
- Women7437%
- Men12463%
Chronic conditions among Dr. Siwek's Medicare patients, 2024
- High blood pressure75%
- High cholesterol67%
- Diabetes49%
- Chronic kidney disease48%
- Mood disorders45%
- Arthritis44%
- Depression41%
- Anxiety40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Siwek's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Siwek wrote 689 Medicare Part D claims in 2024
In 2024, Dr. Siwek wrote 689 Medicare Part D claims for 111 patients. 45% of them were for generic drugs. CMS names the drug for 558 of them, across 17 drugs with 11 or more claims each, at $1,249,850 in total drug cost. In 2023, CMS named 517 claims across 17 drugs.
Dr. Siwek's Part D claims by kind of drug, 2024
- Generic307 claims45%
- Brand-name382 claims55%
Dr. Siwek's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Siwek's Part D claims, 2024
- Antibiotics34%233 of 689 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5172024: 5588%
Drugs named by CMS: 17 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gregory Siwek offers telehealth to Medicare patients
Dr. Siwek accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Siwek as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory Siwek received $32 in industry payments in 2022
CMS Open Payments shows 2 general payments to Dr. Siwek from 1 drug or device company in 2022. Education make up the largest share, 100% of the total. Insmed, Inc. paid the most, $32.
Companies that paid Dr. Siwek the most, 2022 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Siwek graduated from Rowan University School of Osteopathic Medicine
Dr. Siwek graduated from Rowan University School of Osteopathic Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory Siwek's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gregory Siwek
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gregory Siwek's NPI number?
Dr. Gregory Siwek's NPI number is 1437125317. It was assigned on February 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Siwek?
Dr. Gregory Siwek is an infectious disease specialist in Minneapolis, Minnesota. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Gregory Siwek practice?
Dr. Siwek practices at 8170 33rd Avenue South, Bloomington, MN 55425. Dr. Siwek's primary practice is Health Partners Hospice & Palliative Care in Bloomington, Minnesota. Dmand AI also links Dr. Siwek to 1 hospital.
What is Dr. Gregory Siwek's office phone number?
The practice phone on file for Dr. Siwek is (952) 883-6877.
What is Dr. Gregory Siwek's medical license number?
Dr. Siwek holds Minnesota license 43054.
Which hospitals is Dr. Gregory Siwek affiliated with?
Dr. Siwek is affiliated with Regions Hospital. Dmand AI links Dr. Siwek to 1 more hospital.
What medical group is Dr. Gregory Siwek part of?
Dr. Siwek is linked to HealthPartners.
Does Dr. Gregory Siwek accept Medicare?
Yes. CMS data shows Dr. Siwek billed Medicare for 692 services in 2024, and Dr. Siwek accepts Medicare assignment.
Does Dr. Gregory Siwek offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Siwek as offering telehealth services.
How many Medicare patients does Dr. Gregory Siwek see?
CMS counts 198 Medicare patients who saw Dr. Siwek in 2024, with an average age of 66.
Show 5 more questionsShow fewer questions
What services does Dr. Gregory Siwek bill to Medicare?
In 2024, Dr. Siwek's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and office visit, established patient (99214).
Where did Dr. Gregory Siwek go to medical school?
Dr. Siwek graduated from Rowan University School of Osteopathic Medicine in 1999.
What drugs does Dr. Gregory Siwek prescribe most?
In 2024 Medicare Part D data, Dr. Siwek's most prescribed drugs by claims were Biktarvy, Tivicay and Descovy.
Has Dr. Gregory Siwek received payments from drug or device companies?
CMS Open Payments shows $32 in general payments to Dr. Siwek from 1 company from 2022 to 2022. The largest total came from Insmed, Inc.
How long has Dr. Gregory Siwek been practicing?
Dr. Siwek graduated from medical school in 1999, 27 years ago.
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